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Vol. 4 No. 1 (2020): APRIL

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Classification Methods for Mapping Mangrove Extents and Drivers of Change in Thanh Hoa Province, Vietnam during 2005-2018

https://doi.org/10.24259/fs.v4i1.9295
Hai-Hoa Nguyen
Vietnam National University of Forestry, Vietnam
Nghia Huu Nghia
Vietnam National University of Forestry, Vietnam
Hien Thi Thu Nguyen
Thai Nguyen University of Agroforestry, Vietnam
An Thanh Le
Vietnam National University of Forestry, Vietnam
Lan Thi Ngoc Tran
Vietnam National University of Forestry, Vietnam
Linh Vo Khanh Duong
Vietnam National University of Forestry, Vietnam
Simone Bohm
University of Hohenheim, Germany
Michael J Furniss
Humboldt State University, USA

Corresponding Author(s) : Hai-Hoa Nguyen

hoanh@vnuf.edu.vn

Forest and Society, Vol. 4 No. 1 (2020): APRIL

Abstract

Mangrove forests have been globally recognised as their vital functions in preventing coastal erosion, mitigating effects of wave actions and protecting coastal habitats and adjacent shoreline land-uses from extreme coastal events. However, these functions are under severe threats due to the rapid growth of population, intensive shrimp farming and the increased intensity of severe storms in Hau Loc and Nga Son districts, Thanh Hoa province. This research was conducted to monitor spatial-temporal changes in mangrove extents using Landsat and Sentinel imageries from 2005 to 2018. Unsupervised and supervised classification methods and vegetation indices were tested to select the most suitable classification method for study sites, then to quantify mangrove extents and their changes in selected years. The findings show that supervised classification was the most suitable in study sites compared to vegetation indices and unsupervised classification. Mangrove forest extents increased by 7.5 %, 38.6 %, and 47.8 % during periods of 2005 - 2010, 2010 - 2015 and 2015 - 2018, respectively. An increase of mangrove extents resulted from national programs of mangrove rehabilitation and restoration during 2005- 2018, increased by 278.0 ha (123.0 %).

Keywords

Mangrove restoration remote sensing spatio-temporal vegetation
Nguyen, H.-H., Nghia, N. H., Nguyen, H. T. T., Le, A. T., Ngoc Tran, L. T., Duong, L. V. K., Bohm, S., & Furniss, M. J. (2020). Classification Methods for Mapping Mangrove Extents and Drivers of Change in Thanh Hoa Province, Vietnam during 2005-2018. Forest and Society, 4(1), 225-242. https://doi.org/10.24259/fs.v4i1.9295
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Author Biography

Hai-Hoa Nguyen, Vietnam National University of Forestry, Vietnam
Forest Resources and Environmental Management Faculty
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